#!/usr/bin/env bash

read -r -d '' EXPECTED <<EOF
/*
Copyright DATE Banzai Cloud.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
EOF

STATUS=0
FILES=$(find . -name "*.go" -not -name "*.gogen.go" -not -path "./vendor/*" -not -path "./pkg/cloudinfo-client/*"  -not -path "./pkg/k8sutil/cached_rest_mapper.go")

for FILE in $FILES; do
    # Skip check for autogenerated files
    if ! head -n 1 "$FILE" | grep '// +build' &>/dev/null; then
        # Replace the actual year with DATE so we can ignore the year when
        # checking for the license header.
        HEADER=$(head -n 15 "$FILE" | sed -E -e 's/Copyright [0-9]+/Copyright DATE/')
        if [ "$HEADER" != "$EXPECTED" ]; then
            echo "incorrect license header: $FILE"
            STATUS=1
        fi
    fi
done

exit $STATUS
